bp-space-invaders
Version:
The BP Space Invaders Game
122 lines • 18.1 kB
JavaScript
import { COLORS, DESTRUCTION_ANIMATION } from './alien-constants';
import { ObservableTypeEnum } from '../../enum/observable-type.enum';
import { AssetClass } from '../../asset/asset.class';
export class AlienClass extends AssetClass {
constructor(gameService, ctx, boundarySetup, guid, assetPoints) {
super(gameService, ctx, boundarySetup, guid);
this.assetPoints = assetPoints;
this.bombTimer = {
start: performance.now(),
elapsed: 0
};
}
spawn() {
this.assetAnimation = this.assetAnimations[0];
this.engineAnimation = [];
this.destructionAnimations = DESTRUCTION_ANIMATION;
this.destructionAnimation = this.destructionAnimations[0];
super.spawn();
}
draw() {
this.ctx.save();
this.ctx.translate(this.x, this.y);
this.drawAlien();
this.ctx.restore();
}
drawAlien() {
this.assetAnimation.forEach((row, y) => {
row.forEach((value, x) => {
if (value > 0) {
this.ctx.fillStyle = COLORS[value];
this.ctx.fillRect(x, y, 1, 1);
}
});
});
}
isHit(missileAsset) {
if (!this.isDestroyed) {
this.isDestroyed = this.gameService.isHit({
x: this.x,
y: this.y,
shape: this.shape
}, missileAsset);
const alienType = this.isAlienAsset ? ObservableTypeEnum.alienDestroyed : ObservableTypeEnum.alienBossDestroyed;
if (this.isDestroyed) {
this.gameService.emitMasterObservableEvent({
type: alienType,
numberData: this.uid,
pointData: this.points
});
missileAsset.isDestroyed = true;
}
}
}
creep(asset) {
asset.shape = this.shape;
return this.gameService.valid(asset, this.boundary);
}
randomizeDropBomb() {
if (this.canFireWeapon) {
const randomBombNumber = Math.floor(Math.random() * 10 + 1);
return randomBombNumber >= 4 && randomBombNumber <= 6;
}
return false;
}
drawAlienDestruction() {
this.destructionAnimation.forEach((row, y) => {
row.forEach((value, x) => {
if (value > 0) {
this.ctx.fillStyle = COLORS[value];
this.ctx.fillRect(this.x + x, this.y + y, 1, 1);
}
});
});
}
destructionAnimate(now = 0) {
this.destructionTimer.elapsed = now - this.destructionTimer.start;
if (this.destructionAnimationCounter === this.destructionAnimations.length) {
cancelAnimationFrame(this.destructionRequestId);
return;
}
if (this.destructionTimer.elapsed > 50) {
this.destructionTimer.start = now;
this.destructionAnimation =
this.destructionAnimations[this.destructionAnimationCounter++ % this.destructionAnimations.length];
}
this.drawAlienDestruction();
this.destructionRequestId = requestAnimationFrame(this.destructionAnimate.bind(this));
}
animate(now = 0) {
this.assetTimer.elapsed = now - this.assetTimer.start;
this.bombTimer.elapsed = now - this.bombTimer.start;
if (this.isDestroyed) {
this.destructionAnimate();
return;
}
this.destructionAnimationCounter = 0;
if (this.assetTimer.elapsed > 900) {
this.assetTimer.start = now;
this.assetAnimation = this.assetAnimations[this.animationCounter++ % this.assetAnimations.length];
}
if (this.bombTimer.elapsed > 1000) {
this.bombTimer.start = now;
if (this.randomizeDropBomb()) {
this.gameService.emitMasterObservableEvent({
type: ObservableTypeEnum.bombDropped,
assetCoordinateData: {
x: this.x + this.getAssetWidth() / 2 - 1,
y: this.y + this.getAssetHeight() - 5
}
});
}
}
this.draw();
}
get points() {
return this.assetPoints;
}
isAlien() {
return this.isAlienAsset;
}
}
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{ COLORS, DESTRUCTION_ANIMATION } from './alien-constants';\nimport { IAsset } from '../../interface/asset.interface';\nimport { GameService } from '../../service/game.service';\nimport { ObservableModel } from '../../model/observable.model';\nimport { ObservableTypeEnum } from '../../enum/observable-type.enum';\nimport { AssetClass } from '../../asset/asset.class';\nimport { TimerModel } from '../../model/timer.model';\nimport { BoundarySetupModel } from '../../model/boundary-set.model';\n\n/**\n * The Alien Class\n */\nexport abstract class AlienClass extends AssetClass {\n  /**\n   * The Missile Timer\n   */\n  protected bombTimer: TimerModel;\n  /**\n   * The can fire weapon\n   */\n  public canFireWeapon: boolean;\n  /**\n   * The alienType\n   */\n  protected isAlienAsset: boolean;\n\n  /**\n   * Constructor\n   * @param gameService The GameService\n   * @param ctx The ctx\n   * @param boundarySetup The BoundarySetupModel\n   * @param guid The guid of the alien\n   */\n  constructor(\n    gameService: GameService,\n    ctx: CanvasRenderingContext2D,\n    boundarySetup: BoundarySetupModel,\n    guid: number,\n    private assetPoints: number\n  ) {\n    super(gameService, ctx, boundarySetup, guid);\n\n    this.bombTimer = {\n      start: performance.now(),\n      elapsed: 0\n    } as TimerModel;\n  }\n\n  /**\n   * Spawn the alien\n   */\n  protected override spawn(): void {\n    this.assetAnimation = this.assetAnimations[0];\n    this.engineAnimation = [];\n    this.destructionAnimations = DESTRUCTION_ANIMATION;\n    this.destructionAnimation = this.destructionAnimations[0];\n    super.spawn();\n  }\n\n  /**\n   * Draw everything necessary\n   */\n  protected draw(): void {\n    this.ctx.save();\n    this.ctx.translate(this.x, this.y);\n    this.drawAlien();\n    this.ctx.restore();\n  }\n\n  /**\n   * Draw the alien\n   */\n  private drawAlien(): void {\n    this.assetAnimation.forEach((row, y) => {\n      row.forEach((value, x) => {\n        if (value > 0) {\n          this.ctx.fillStyle = COLORS[value];\n          this.ctx.fillRect(x, y, 1, 1);\n        }\n      });\n    });\n  }\n\n  /**\n   * Is the alien hit\n   * @param missileAsset The Missile Asset\n   */\n  isHit(missileAsset: IAsset): void {\n    if (!this.isDestroyed) {\n      this.isDestroyed = this.gameService.isHit(\n        {\n          x: this.x,\n          y: this.y,\n          shape: this.shape\n        } as IAsset,\n        missileAsset\n      );\n\n      const alienType = this.isAlienAsset ? ObservableTypeEnum.alienDestroyed : ObservableTypeEnum.alienBossDestroyed;\n\n      if (this.isDestroyed) {\n        this.gameService.emitMasterObservableEvent({\n          type: alienType,\n          numberData: this.uid,\n          pointData: this.points\n        } as ObservableModel);\n        missileAsset.isDestroyed = true;\n      }\n    }\n  }\n\n  /**\n   * Allow the alien to creep\n   * @param asset The Asset\n   */\n  creep(asset: IAsset): boolean {\n    asset.shape = this.shape;\n    return this.gameService.valid(asset, this.boundary);\n  }\n\n  /**\n   * Randomize when an alien can drop a bomb\n   */\n  private randomizeDropBomb(): boolean {\n    if (this.canFireWeapon) {\n      const randomBombNumber = Math.floor(Math.random() * 10 + 1);\n      return randomBombNumber >= 4 && randomBombNumber <= 6;\n    }\n\n    return false;\n  }\n\n  /**\n   * Draw the alien\n   */\n  private drawAlienDestruction(): void {\n    this.destructionAnimation.forEach((row, y) => {\n      row.forEach((value, x) => {\n        if (value > 0) {\n          this.ctx.fillStyle = COLORS[value];\n          this.ctx.fillRect(this.x + x, this.y + y, 1, 1);\n        }\n      });\n    });\n  }\n\n  /**\n   * Animate the alien\n   * @param now the current time\n   */\n  protected destructionAnimate(now = 0): void {\n    this.destructionTimer.elapsed = now - this.destructionTimer.start;\n\n    if (this.destructionAnimationCounter === this.destructionAnimations.length) {\n      cancelAnimationFrame(this.destructionRequestId);\n      return;\n    }\n\n    if (this.destructionTimer.elapsed > 50) {\n      this.destructionTimer.start = now;\n      this.destructionAnimation =\n        this.destructionAnimations[this.destructionAnimationCounter++ % this.destructionAnimations.length];\n    }\n\n    this.drawAlienDestruction();\n    this.destructionRequestId = requestAnimationFrame(this.destructionAnimate.bind(this) as FrameRequestCallback);\n  }\n\n  /**\n   * Animate the alien\n   * @param now the current time\n   */\n  public animate(now = 0): void {\n    this.assetTimer.elapsed = now - this.assetTimer.start;\n    this.bombTimer.elapsed = now - this.bombTimer.start;\n\n    if (this.isDestroyed) {\n      this.destructionAnimate();\n      return;\n    }\n\n    this.destructionAnimationCounter = 0;\n\n    if (this.assetTimer.elapsed > 900) {\n      this.assetTimer.start = now;\n      this.assetAnimation = this.assetAnimations[this.animationCounter++ % this.assetAnimations.length];\n    }\n\n    if (this.bombTimer.elapsed > 1000) {\n      this.bombTimer.start = now;\n      if (this.randomizeDropBomb()) {\n        this.gameService.emitMasterObservableEvent({\n          type: ObservableTypeEnum.bombDropped,\n          assetCoordinateData: {\n            x: this.x + this.getAssetWidth() / 2 - 1,\n            y: this.y + this.getAssetHeight() - 5\n          } as IAsset\n        } as ObservableModel);\n      }\n    }\n\n    this.draw();\n  }\n\n  /**\n   * Set the asset points\n   * @param points The number of points\n   */\n  get points() {\n    return this.assetPoints;\n  }\n\n  /**\n   * If the asset is an alien or alien boss\n   */\n  public isAlien(): boolean {\n    return this.isAlienAsset;\n  }\n}\n"]}